Latch.



J. E. MINNER.

LATCH.

APPLICATION FILED JULY 2. 1912.

1,1 05,527, Patented July 28,1914.

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@TTE S ATES PATENT QFFICE.

LATCH.

To all whom it may concern:

.Be it known that I, JULIAN E. Mruxnn, a citizen of the United States, residing at Jamestown, in the county of Stutsman and State of North Dakota, have invented new and useful Improvements in Latches, of which the following is a specification.

This invention relates to latches for doors on railway coaches or other moving bodies.

In carrying out my invention it is my purpose to provide a latch especially adapted for use in connection with lavatory doors on railway cars which will automatically close when the car is halted.

I further aim to provide in a device of this character, a simple and effective means whereby the door may be opened by a person within the wash room or lavatory even after the car is stopped and the door latched.

With the above objects and others of a similar nature in view, the invention consists in the novel construction, combination 1 and arrangements of parts set forth in, and

falling within the scope of the appended claims.

In the drawings, Figure 1 is a sectional view taken through an ordinary railway coach and showing the application of my device. Fig. 2 is. a detail sectional view of the upper portion of the device provided with the latch. Fig. 3 is a sectional view illustrating a slightly modified form of the device. Fig. 4; is a detail sectional View of the same.

Referring now to the drawings in detail the numeral 1 designates the body of the car, 2 the axle therefor and 3 the car wheel.

The numeral 4 designates an endless belt which is adapted to be received upon a friction wheel secured to the inner face of the car wheel 3, or to the axle 2, if the axle is constructed to revolve with the wheel, and the belt also engages with a friction pulley 5 that is secured upon a shaft 6, the said shaft being mounted for rotation in a suit able bearing 7 provided upon a bracket that is secured beneath the floor of the car. The shaft 6 has thereon a pivoted toothed or friction wheel 8, the same adapted to engage with a similar toothed wheel 9, provided upon a vertically extending shaft 10, the shaft 10 is mounted in suitable bearings 11 and 19 and is provided with a collar 13, having a threaded opening adapted for the reception of a threaded element 14; whereby the shaft may be raised or lowered to adjust Specification of Letters Patent.

Application filed July 2, 1912.

Patented July 2t 1914.

Serial No. 707,335.

its toothed wheel 9 with relation to the toothed wheel 8.

The shaft 10 is projected within the lavatory of the car. The numeral 15 designates a sleeve which is adapted to rotate with the shaft, means being provided for permitting the said sleeve a longitudinal movement with relation to the shaft, as for instance, the shaft may be provided with a feather and the bore of the sleeve provided with a slot to receive the sleeve, in the well known manner. The sleeve, adjacent its opposite ends, is formed with peripheral grooves, desiguated by the numerals 16 and 17 respectively.

The numeral 18 designates a collar which is secured upon the shaft 10 at a suitable distance below the sleeve 15, and which is adapted to serve as a stop to limit the d0wnward movement of the sleeve.

The numeral 19 designates a collar that is mounted upon the shaft 10. This collar has loosely secured thereto diametrically opposite links which have their free ends provided with elongated openings for the reception of pins 20 which pass through angularly arranged arms 21 which have their upper ends provided with yokes which surround the sleeve 15 and which are preferably hingedlv connected and have the pinties of their hinges arranged within the depressions 17 of the sleeve 15. The lower ends of the arms 21 are provided with weights 22.

The numeral 23 designates an arm which has one of its ends formed with a bifurcated portion or yoke, the same having inturned studs which are received within the annular depression 16 of the sleeve 15. This arm 23 is provided with a right angular extension 24. on, what may be termed, its upper edge,

while its lower edge, opposite the arm 24 is formed with an angular extension through the end of which passes a pivot 27, whereby the arm 23 is sustained upon a suitable support. The arm 23 has its end further provided with an offset 28 upon which is formed a longitudinally extending catch member 29. The catch is adapted to engage with a suitable spring clip 31 provided in the lavatory door 80, and secured to the partition or to the frame for the door 30 is a spring 25 which has its free end connected to the angular extension 24 of the rod 23.

and whereby the latch member 29 is forced the spring catch 31 of the door. The spring catch 31 has an outer substantially V- shaped face, as has the end of the latch member 29, so that the said members will be directed into proper engagement with each other, and will be retained in said engagement when the car halts and the revolution of the shaft ceases.

From the above description it will be noted that through the mechanism connected! with the car wheel and with the shaftlO, the said shaft will revolve as the wheel 3.- of the coach revolves, thus causing the; weighted members 23 of the governor tospread and to slide the sleeve downwardly upon the shaft, 10, which movement; swings the arm 24: which is connected with the Y-shaped member so as to bring the latch member 29 out of its keeper 81, so that; the door may be readily opened or closed, when the coach is in motion, and when the coach stops, say at a station the movement. of the rod, ceases and the weighted element. 22, will force the sleeve 15 upwardly and into engagement with the keeper 31, thus locking; the door to prevent entrance from the out-- side. Should a person be in the lavatorywhen the car is stopped it is merely necessary for him to raise the latch 29, out of its;

' keeper to readily open the door, and if desired a key may be passed through a suitable slot, not shown, whereby the said latch may be lifted from the outside by those having authority to enter the lavatory.

? In Figs. 3 and a I, have illustrated a. slightly modified form of the device. In theapparatus illustrated in Figs. 1 and 2 the door has been illustrated as opening to the outside while in the said F ig sh 3 and 4 the door is adapted to open toward the inside of y the lavatory, In the said Figs. 8 and 4, the

lavatory is designated by the letter a and 1 the door opening into the same is designated: by the letter 6. The door is provided witlr a latch which comprises a casing 0, and a: keeper (Z. The bolt 0 is mounted to reciprocate within the casing 0 and is normallyforced toward and into engagement with; the keeper (Z. through the medium ofa spring: The letter designates an offset finger which is connected with the latch. bolt (Z and which extends through an elongated opening The letter ]L designates a. bar which is 1 connected with'the offset finger f and whichis mounted in a suitablebearing i provided? upon. the door or the casing therefor. Gonnected with the free end of the bar It is a: flexible element, such as a chaining, and the said chain is likewise connected with bell crank lever is which is. mounted in bearings upon a vertically movable. collar Z, the same; being connected. with a ball governor n which is mounted to revolve upon a shaft m. The ilowerextremity of the shaft, which exi tends through the floor of the, car is provided with a-friotion beveled wheel 0, the

a same co-acting with a similar wheel 39 secured upon a shaft 9 which ismounted in suitable bearings and which has a belt wheel for the reception of a continuous belt 1' which in turn is connected with a wheel a secured upon an axle 25 of one of the wheels 16 of the car.

The operation of this device, will, it is thought, be perfectly apparent to those skilled in the art to which such inventions appertain, and it will be noted that when the governor m, ceases in its revolutionsaround the shaft 1?. when the'said shaft is halted by the stoppage of the car, the bell crank level will have its offset arm, which may be designated by the letter 4;, swung downwardly and against the pressure of a spring w so that the latch bolt 0 under the exertion of the springe, and through the medium of the resilient element j, will allow the said latch bolt to engage within, the keeper d... It will be further noted thatwhen the car is in; motion the latch bolt is retracted from, its keeper, in order to permit of authorized, persons entering the lavatory. After the car has ceased in its motion, the door I) isprovided with a suitable key opening a, the same adapted to register with a depressed portion y provided in the latch bolt, and whereby a key may be inserted within the jopening a to engage the (lGPIGSSlOILjZ/ and to retract the bolt to permit the opening of the door. It will be further noted that when a person is inclosed within the lavatory after 'thecar has ceased in its motion, it will be .merely necessaryfor him to retract the bolt by exerting pressure upon the offset n1e1n- \ber f or the rod 71. connected therewith.

Having thus described the invention what I claim is:-

1. In combination with; a vehicle, of, a shaft in the vehicle having means connected ;with the running gear of the vehiclewhereby the shaft is revolved, a governor mounted on the shaft, the said governor including a slidable sleeve which, is mounted upon the shaft, :1 door having a keeper, and a? latch connected with the governor adapted to engage the keeper of the door when ve- -hicle is stoppedand the. shaft ceases, to rotate.

2. In combination with vehicle having a door and a keeper for'the door, of a pulley connected withone of the wheels of the' vehicle, a bracket upon the under body of the vehicle, a shaft journaled upon the bracket, a pulley upon the shaft, an endless member engaging the pulley of theshaft and;

the pulley of the; vehicle, tl1e said shaft be provided with a beveled wheel, a second shaft arrangedatright angles, to the first named shaft and. having its lower extremity projecting through the, base ,of the vehicle the said projecting portion, of the, said sec- 0nd shaft having a beveled wheel eo-aeting With the beveled Wheel of the first named shaft, bearings for the second named shaft, a slidable sleeve upon the said second shaft, a stop member for the sleeve, a ball governor supported upon the said second shaft and having its Weighted arms co-acting with the sleeve, a pivoted substantially Y-shaped member having one of its arms eo-acting with the sleeve, one of the angular arms of the said Y-shaped member having a longitudinal extension notched to provide a latch which is adapted to engage with the keeper of a door, and a spring connected with the third arm of the Y-shaped member and 15 JULIAN E. MINNER.

Witnesses:

A. L. KNAUF, PEARL I-IELDLEBAUGH.

Copies of this patentmay be obtained for five cents each, by addressing the, Commissioner of Patents, Washington, D. G. 

